Structure 57 1148L · San Diego County, CA

Route 905 over Airway Road

Carries Route 905 over Airway Road, 11-sd-905-r10.90.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

118 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built201115 years old
Length117.8 ft35.9 m
Daily traffic16,250counted 2020
Last inspectedDecember 2023every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-905-r10.90
CarriesRoute 905
CrossesAirway Road
Coordinates32.56043, -116.94424

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length117.8 ft (35.9 m)
Max Span117.8 ft (35.9 m)
Deck Width71.9 ft (21.9 m)
Deck Area786.2 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic16,250 (2020)
Truck Traffic7%
Lanes On Bridge3
Lanes Under Bridge3

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57 1148L

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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